BMW 540i – E34 (1989 – 1990) – fuse box diagram
Year of production: 1989, 1990
Front Power Distribution Box
The fuse block is located on the lower portion of the instrument panel on the driver’s side.
| Fuses | Usage |
| 1 | Starter relay |
| 2 | Horn relay |
| 3 | Unloader relay (KLR) |
| 4 | Blower relay |
| 5 | Vacant |
| 6 | Phone alert relay |
| 7 | Unloader relay (K 61) |
| 8 | Water pump relay |
| 9 | Unloader relay (K 15) |
| 10 | Hazard flasher relay |
| 11 | Check control module |
| 12 | Crash control unit |
| 13 | Lamp control module |
Rear Power Distribution Box
The rear power distribution box is located beneath the rear seat cushion and houses auxiliary fuses. relays . and control modules.
| Fuse | Usage |
| 1 | Fuse block |
| 2 | General module |
| 3 | Relay module |
| 4 | Electric power protection module |
| 5 | Wiper relay |
| 6 | Rear defogger relay |
| 7 | Fuse block |
| 8 | Fuse block |
| 9 | Wiper pressure control relay (ADV), as applicable |
Electronics Box (E-box)
The electronics box or E·box is located in the right·hand rear corner of the engine compartment.
electronics E-box
| Fuse | Usage |
| 1 | ABS or Slip (traction) control module |
| 2 | DME control module |
| 3 | Cruise control module |
| 4 | System (main) relay |
| 5 | Fuel pump relay |
| 6 | Oxygen sensor heater relay |
Auxiliary Relay Panel
The auxiliary relay panel is mounted to the front left corner of the engine compartment.
| Fuse | Usage |
| 1 | Headlight/fog light cleaning system module (Canada) |
| 2 | High speed relay |
| 3 | Normal speed relay |
| 4 | Phone horn alert relay |
| 5 | Air conditioning relay |
| 6 | Fuses |
Fuse postion
Fuses number 1 through fuse 29 are mounted in the front power distribut ion box. Additional fuse locations include the rear power distribution box (Fuse #30-37. and #40-47) and the auxiliary relay panel (Fuse # 48. 49 or #55-56).
| Fuse | Ampere rating [A] | Usage |
| 1 | 15 | ABSffraction system (see also Fuse 17) Instrument cluster check control (see also Fuses 15. 17. 20. 29) Lamp monitor (see also Fuses 2, 3, 5, 7, 10, 11, 13, 14, 15) Brake lights Cruise control (see also Fuse 17) On-board computer (see also Fuses 17, 20) Electronic throttle control (EML) (see also Fuses 17, 20) Electronic transmission control (see also Fuse 12, 17) |
| 2 | 7,5 | Fuel injection (M60 engine only) Headlights/Fog lights (see also Fuses 3, 4, 5, 7, 10, 11, 13, 14, 15, 24) Lamp monitor (see also fuses 1, 3, 4, 5, 7, 10, 11, 13, 14, 15) Turn signal hazard lights (see also Fuses 3, 6, 13, 14) Crash control unit (see also Fuses 6, 10, 11 ) |
| 3 | 7,5 | Headlights/Fog lights (see also Fuses 2, 5, 7, 10, 11, 13, 14, 24) Lamp monitor (see also Fuses 1, 2, 4, 5, 7, 10, 11, 13, 14, 15) Turn signal/hazard lights (see also Fuses 2, 6, 13, 14) Headlight washer (Canada) (see also Fuses 4, 5, 17, 22, 24) Central body electronics (ZKE) (see also Fuses 4, 5, 17, 24, 30, 47) |
| 4 | 7,5 | Park/tail/underhood lights (see also Fuses 5, 15, 20) Lamp monitor (see also Fuses 1, 2, 3, 5, 7, 10, 11, 13, 14, 15) Power mirrors (see also Fuses 5, 12) Headlight washer (Canada) (see also Fuses 3, 5, 17, 22, 24) Central body electronics (ZKE) (see also Fuses 3, 5, 17, 24, 30, 47) |
| 5 | 10 | Headlights/Fog lights (see also Fuses 2, 3, 7, 10, 11, 13, 14) Headlight washer (Canada) (see also Fuses 3, 4, 17, 22, 24) Parkitail/underhood lights (see also Fuses 4, 15, 20) License/trunk illumination (see also 15, 21) Glove box lighVcigar lighter (see also Fuses 18, 21, 26) lnterior lighting (see also Fuses 17, 18, 20, 21) Lamp monitor (see also Fuses 1, 2, 3, 4, 7, 10, 11, 13, 14, 15) Power mirrors (see also Fuses 4, 12) Central body electronics (ZKE) (see also Fuses 3, 5, 17, 24, 30, 47) |
| 6 | 15 | Turn signal/hazard lights (see also Fuses 2, 3, 13, 14) Crash control unit (see also Fuses 2, 10, 11) |
| 7 | 15 | Headlights/Fog lights (see also Fuses 2, 3, 5, 10, 11, 13, 14, 15) Lamp monitor (see also Fuses 1, 2, 3, 4, 5, 10, 11, 13, 14) |
| 8 | 7,5 | — |
| 9 | 15 | Horn Integrated Climate Control Regulation (IHKR) (see also Fuses 19, 20, 27, 29, 46) Cellular telephone (see also Fuses 18, 31 ) Auxiliary fan (see also Fuses 25, 29) |
| 10 | 7,5 | Headlights/Fog lights (see also Fuses 2, 3, 5, 7, 11, 13, 14) Lamp monitor (see also Fuses 1, 2, 3, 4, 5, 7, 11, 13, 14, 15) Crash control unit (see also Fuses 2, 10, 11 ) |
| 11 | 7,5 | Headlights/Fog lights (see also Fuses 2, 3, 5, 7, 10, 13, 14) Lamp monitor (see also Fuses 1, 2, 3, 4, 5, 7 10, 13, 14, 15) Crash control unit (see also Fuses 2, 10, 11) |
| 12 | 15 | Windshield washer nozzle heaters Backup lights Power Mirrors Memory seats (see also Fuses 16, 18, 42) Electronic transmission control (see also Fuse 1 , 17) |
| 13 | 7,5 | Headlights/Fog lights (see also Fuses 2, 3, 5, 7, 10,11, 14) Turn signal/hazard lights (see also Fuses 2, 3, 6, 14) Lamp monitor (see also Fuses 1, 2, 3, 4, 5, 7, 10, 11, 14, 15) |
| 14 | 7,5 | Headlights/Fog lights (see also Fuses 2, 3, 5, 7, 10, 11, 13, 37) Turn signal/hazard lights (see also Fuses 2, 3, 6, 13) Lamp monitor (see also Fuses 1, 2, 3, 4, 5, 7, 10, 11, 13, 15) |
| 15 | 7,5 | Park/tail/underhood lights (see also Fuses 4, 5, 20) License/trunk illumination (see also Fuses 5, 21) Brake lights (see also Fuse 1) Lamp monitor (see also Fuses 1, 2, 3, 4, 5, 7, 10, 11, 13, 14) |
| 16 | 30 | Heated seats Memory seats (see also Fuses 12, 18, 42) Lumbar support |
| 17 | 7,5 | Fuel injection (see also Fuse 23) Charging system Starting E-box fan (see also Fuse 28) Electronic Transmission control (see also Fuses 1 , 12) ABSlTraction (see also Fuse 1) Door lock heating (see also Fuse 30) Power windows (see also Fuses 30, 31 , 47) Power sunroof (see also Fuses 30, 31, 47) Headlight washer (Canada) (see also Fuses 3, 4, 5, 22, 24) Instrument cluster/check control (see also Fuses 1, 17, 20, 29) Lamp monitor (see also Fuses 2, 3, 4, 5, 7, 10, 11, 13, 14, 15) Brake lights (see also fuse 15) Interior lights (see also Fuses 5, 18, 21, 30, 44) Electronic throttle control (EML) (see also Fuses 1, 20) Cruise control (see also Fuse 1) On board computer Lamp monitor (see also Fuses 1, 20) Central body electronics (ZKE) (see also Fuses 3, 4, 5, 24, 30, 47) |
| 18 | 15 | Interior lights (see also Fuses 5, 17, 21 ,30, 44) Glove box light/cigar lighter (see also Fuses 5, 21, 26) Radio/CD player (see also Fuse 41) Cellular phone (see also Fuses 9, 31) Memory seats (see also Fuses 12, 16, 42) Anti-theft (Alpine) (see also Fuse 21) Remote control locking |
| 19 | 30 | Integrated Climate Control Regulation (IHKR) (see also Fuses 9. 20. 27, 29, 46) |
| 20 | 7,5 | Instrument cluster/check control (see also Fuses 1, 17, 29) Park/tail/underhood lights (see also Fuses 4, 5, 15) Interior lights (see also Fuses 5, 17, 18, 21, 30) Integrated Climate Control Regulation (IHKR) (see also Fuses 9, 19, 27, 29, 46) On board computer (see also Fuses 1. 17) Electronic throttle control (EML) (see also Fuses 1, 17) |
| 21 | 7,5 | License/trunk illumination (see also Fuses 5, 15) Interior lights (see also Fuses 5, 17, 18, 30, 44) Glove box light/cigar lighter (see also Fuses 5, 18, 26) Anti-theft (Alpine) (see also Fuse 18) |
| 22 | 30 | Windshield wiper pressure control (ADV) (see also Fuses 15, 44) Headlight washer (Canada) (see also Fuses 3, 4, 5, 17, 24) |
| 23 | 15 | Fuel injection/fuel pump (see also Fuse 17) |
| 24 | 10 | Headlight cleaning system (not US) Windshield wiper control (SWSI (see also Fuse 44) Central body electronics (ZKE) (see also Fuses 3, 4, 5, 17, 30, 47) |
| 25 | 30 | Auxiliary fan (see also Fuse 29) |
| 26 | 30 | Glove box light/cigar lighter (see also Fuses 5, 18, 21 ) |
| 27 | 7,5 | Integrated Climate Control Regulation (IHKR) (see also Fuses 9, 19, 20, 29, 46) |
| 28 | 15 | E·box fan (also Fuse 17) Charging system (see also Fuse 17) Font seat heating Heated rear window Power assist steering (Servotronic) |
| 29 | 7,5 | Integrated Climate Control Regulation (IHKR) (see also Fuses 9, 19, 20, 24, 27, 46) Auxiliary fan (see also Fuse 25) Instrument cluster/check cont rol (see also Fuses 1, 17, 20) |
| 30 | 7,5 | Door lock heating (see also Fuse 17) Central locking (see also Fuse 31, 47) Power windows (see also Fuse 17, 31, 47) Power sunroof (see also Fuses 17, 31, 47) Central body electronics (ZKE) (see also Fuses 3, 4, 5, 17, 24, 47) Interior lights (see also Fuses 5, 17, 18, 20, 21) |
| 31 | 7,5 | Central locking (see also Fuses 30, 47) Power windows (see also Fuses 17, 30, 47) Power sunroof (see also Fuses 17, 30, 47) Cellular telephone (see also Fuses 9, 18) |
| 32 | 7,5 | — |
| 34 | 20 | Electric steering column adjust |
| 35 | 30 | Central locking |
| 37 | 20 | Rear window wiper/washer control (Touring) |
| 40 | 15 | — |
| 41 | 30 | Radio/CD player (see also Fuse 18) Heated seats |
| 42 | 30 | Power seats (see also Fuse 43) Memory seats (see also Fuses 12, 16, 18) |
| 43 | 30 | Power seats (see also Fuse 42) |
| 44 | 30 | Windshield wiper control (SWS) (see also Fuse 24) Windshield wiper pressure control (SWS) (see also Fuse 15, 22) |
| 46 | 30 | Integrated Climate Control Regulation (IHKR) (see also Fuses 9, 19, 20, 27, 29) |
| 47 | 30 | Central body electronics (ZKE) (see also Fuses 3, 4, 5, 17,24,30) Power sunroof (see also Fuses 17, 30, 31 ) Power windows (see also Fuses 17, 30,31) Central locking (see also Fuses 30, 31 ) |
| 48 | 15 | — |
| 49 | — | — |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.